Jump to main content
Jump to site search

Issue 13, 2020
Previous Article Next Article

Physical entanglement hydrogels: ultrahigh water content but good toughness and stretchability

Author affiliations

Abstract

Physical entanglement of polymer chains is an interaction that is believed to be too weak to build polymer networks for hydrogelation. Herein, we report a cluster strategy for preparing a class of fundamentally new hydrogels that are crosslinked by only entanglement interaction of polymer chains. The entanglement cluster is created by in situ polymerization of the monomer (acrylamide) in polyacrylamide nanogels to form long inter-connected polyacrylamide chains passing through nanogels. The as-prepared hydrogels can swell high content of water to achieve very low polymer fractions (∼1 wt%). Although they contain an ultrahigh water content and possess an ultra-soft nature (low to ∼10 Pa storage modulus), these physical entanglement hydrogels (PEH) are tough and stretchable (>6 times) due to the free-sliding dynamics of the entanglement-cluster crosslinking interaction. Moreover, this free-sliding nature allows PEH to fully recover their mechanical properties after lyophilization–rehydration treatment. Because of their novel properties, PEH should be promising for various applications.

Graphical abstract: Physical entanglement hydrogels: ultrahigh water content but good toughness and stretchability

Back to tab navigation

Supplementary files

Article information


Submitted
21 Feb 2020
Accepted
05 Mar 2020
First published
06 Mar 2020

Polym. Chem., 2020,11, 2339-2345
Article type
Communication

Physical entanglement hydrogels: ultrahigh water content but good toughness and stretchability

F. Puza, Y. Zheng, L. Han, L. Xue and J. Cui, Polym. Chem., 2020, 11, 2339
DOI: 10.1039/D0PY00294A

Social activity

Search articles by author

Spotlight

Advertisements